基于超稳腔PDH锁频技术的852 nm超稳激光器  

An 852 nm Frequency-stabilized Laser Based on the Ultrastable Cavity PDH Locking Technique

作　　者：麻霁阳 申彤 薛潇博 赵伟楠 苏亚北 杨宏雷 左娅妮 张升康 MA Jiyang;SHEN Tong;XUE Xiaobo;ZHAO Weinan;SU Yabei;YANG Honglei;ZUO Yani;ZHANG Shengkang(Beijing Institute of Radio Metrology and Measurement,Science and technology on metrology and calibration laboratory,Beijing 100039,China;National Institute of Metrology,Beijing 102200,China)

机构地区：[1]北京无线电计量测试研究所,计量与校准技术重点实验室,北京100039 [2]中国计量科学研究院,北京102200

出　　处：《宇航计测技术》2024年第3期68-74,共7页Journal of Astronautic Metrology and Measurement

摘　　要：自上世纪80年代激光锁定技术发展以来,超稳激光器在光钟、引力波探测、腔量子电动力学、星地通讯等高精度光学量子时频计量领域发挥着重要作用。利用Pound-Drever-Hall(PDH)锁频技术,可以将自由运转激光器的频率锁定后获得极高频率稳定性的激光输出。这里,将852 nm波长激光锁定在超稳谐振腔的频率谐振点上,实现超稳频激光输出。试验中的超稳谐振腔品质因子达到1010,精细程度达到20万,输出激光的秒级频率稳定度达到5.2×10^(-15),线宽2.3 Hz。这一频率稳定度的连续激光器将为852 nm波长的钟激光器提供有力的技术支持,与Cs原子产生良好关联。Since the development of laser locking technology in the 1980s,ultrastable lasers have played an important role in high-precision optical quantum time-frequency metrology,such as optical clocks,gravitational wave detection,cavity quantum electrodynamics,and satellite-ground communication.The Pound-Drever-Hall(PDH)technology provides a good way to stabilize free running lasers.Here,by utilizing such method,we lock the 852 nm wavelength laser to the resonance frequency of the ultrastable cavity to achieve the highly-stabilized laser output.In the experiment,the quality factor of the ultrastable resonator reached 1010,the finesse reached 200,000,and the 1 second frequency stability of the output laser reached 5.2×10^(-15) with laser linewidth of 2.3 Hz.This continuous laser with such frequency stability will provide robust technical support for an 852 nm clock laser with good correlation with Cs atoms.

关 键 词：Pound-Drever-Hall锁定 激光稳频 窄线宽激光 

分 类 号：O439[机械工程—光学工程] TN249[理学—光学] V19[理学—物理]